x265 wrote:Could you tell me what i have to do in order to fix the source?

Newbie

I know having seen clips of your source and mine that a lot of the combing artifacts are (most likely) in the source used to encode both copies. The only way to really fix flaws like that is to run a filter like DAA(), but it does blend fields so it is technically damaging to the video. You could run it on just the frame affected if you have the time to find every single one and apply the filter to just that range. As for the rest, according to Mister Hatt there are some hard interlaced spots mixed in, so for those segments I would handle those separately then patch them into the main footage. That is probably the easiest way to manage this type of footage that was poorly handled before the encoding process, which sadly is pretty typical for a lot of anime...